北京地铁4号线砂卵石地层盾构机选型

Shield Machine Selection for Sand and Gravel Strata of Beijing Metro Line 4

在盾构工程中盾构机选型是重点工作之一,盾构机型选择的正确与否是盾构隧道工程施工成败的关键。文章以北京地铁4号线四标段盾构工程为例,介绍了盾构机选型原则与依据,针对4号线四标段所处砂卵石地层特点,系统阐述了北京砂卵石地层盾构机选型的技术路线和过程。

Shield machine selection is one of the priorities in a shield project. Correct selection of shield model is a key to the success of the shield tunnel construction. Taking fourth tender lot for shield project of Beijing Metro Line 4 as an example, the paper introduces the principle and the basis for selection of shield machine model, and the characteristics of the sand and gravel strata in the tender lot section of Line 4 are analyzed. It systematically described the technical route for shield selection for sand and gravel strata and process of the shield machine selection.